Section 6-Machine Control Connections - Omron MC3 Series Installation And Operating Manual

6 M
ACHINE
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OMRON SCIENTIFIC TECHNOLOGIES INC.
Fremont CA USA
Tel: 1/888/510-4357 in USA and Canada
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ONTROL
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W O O R M A L L Y
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E T H O D
The following connection scheme uses both of the normally open output relay
contacts to control the machine. This is the Omron STI recommended wiring
method.
In the machine control circuit, locate the two machine primary control
elements (MPCE1 & MPCE2). These are defined as "The electrically powered
element that directly controls the normal operation of a machine in such a
way that it is the last element (in time) to function when machine operation is
to be initiated or arrested." IEC 61496-1
The method to arrest hazardous machine motion will vary depending on the
type of machine. Control methods include hydraulic, pneumatic, clutch and
mechanical braking systems. For example, an MPCE may consist of relays,
contactors, solenoids or electromechanical valves. If relays, the MPCE must use
force-guided contact type relays.
M C
A C H I N E
Two Normally Open Preferred Connection Method
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ONNECTIONS
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P E N R E F E R R E D
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O N T R O L O N N E C T I O N S
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O N N E C T I O N
©OSTI 0411 PN99307-0010 Rev. D
Original Instructions